Where did giving out cigars at a child's birth come from?

well... now at day's it's more common for Dad's to participate in the Birthroom, or even in the OR during a C-section at the hospital , but back in the days dad's use to wait outside in their houses and let mom do all the work on her own in one of the rooms of the house with the doctor or ... maybe she would be accompanied by her own mother or her mother in law... but men would wait outside... and since they were hanging out with probably their closed friends and relatives to celebrate the arrival of the new baby they would bring cigars to smoke meanwhile the birth was taking place, and it was a tradition to offer a cigar smoke to visitors in general ... & that's how the tradition began... :)